123229969 has 4 divisors (see below), whose sum is σ = 126235620. Its totient is φ = 120224320.

The previous prime is 123229949. The next prime is 123229973. The reversal of 123229969 is 969922321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3655744 + 119574225 = 1912^2 + 10935^2 .

It is a cyclic number.

It is not a de Polignac number, because 123229969 - 2¹¹ = 123227921 is a prime.

It is a super-2 number, since 2×123229969² = 30371250519481922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123229919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502764 + ... + 1502845.

It is an arithmetic number, because the mean of its divisors is an integer number (31558905).

Almost surely, 2^123229969 is an apocalyptic number.

It is an amenable number.

123229969 is a deficient number, since it is larger than the sum of its proper divisors (3005651).

123229969 is an equidigital number, since it uses as much as digits as its factorization.

123229969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005650.

The product of its digits is 104976, while the sum is 43.

The square root of 123229969 is about 11100.8994680611. The cubic root of 123229969 is about 497.6287306075.

The spelling of 123229969 in words is "one hundred twenty-three million, two hundred twenty-nine thousand, nine hundred sixty-nine".